Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set - Manual (Page 606)

Remote I/O Parameters
Chapter 33
33-6
Function
This parameter is used to enable the 9/Series remote I/O connection to
perform block transfers thru PAL. Selecting “Enable” allows block
transfer, single transfers, and pass through to occur. Selecting “Disabled”
allows only single data transfers to occur.
When downloading AMP, PAL or performing other 9/Series
communications to ODS or Mini-DNC through data highway and you are
using remote I/O to pass data to PAL ($RMON is set), this flag must be
enabled. Block transfer is the communication method used by the PLC to
pass data through, get data from, the 9/Series. If you are not using PAL to
perform remote I/O communications (PAL flag $RMON is not set) the
module will automatically be enabled for pass through communications.
When block transfers are enabled, the first input and the first output words
used for single transfers are reserved for block transfer status. The first
word in a rack is configured with the parameter “Adapter Start Module
Group”. See page 33-3 for details. For any rack starting address
configured as SQ0 this is words $RMI1 and $RMO1.
Axis Parameter Number
Mill/Lathe Grinder
All [145] [144]
Range
Selection Result
(a) Enabled
(b) Disabled
Notes
Important: A softkey is available to temporarily enable block transfers.
This softkey will override the disabled setting made with this AMP
parameter until the next time power to the control is cycled or the softkey
is pressed again to disable block transfers. The softkey is intended to allow
the temporary use of DH+ pass through on systems using pass through to
communicate with ODS. If AMP is lost or on new systems that have not
had AMP downloaded, use this softkey to enable block transfers so a new
AMP (with this flag enabled) can be downloaded using remote I/O pass
through. The softkey is only available when this AMP parameter is set to
Disabled and PAL has enabled remote I/O with $RMON.
The PLC system installer may be able to help you determine this value.
END OF CHAPTER
33.6
Adapter Block Transfer